3CX Version, Professional Annual 18.0 (Build 418)
Is the 3CX Server Hosted and where? Hosted in AWS
IP Phone Make/Model/Firmware version, Yealink T46g version 28.83.0.130
Provisioning Method: STUN
Trunk Provider or VoIP Gateway Make/Model, T4
Has the Firewall Checker passed: YES
Are custom Phone...